Thank you for using our answers forums. I can certainly see your concern. As for changing channels, whatever you are viewing on your home TV will be the same as what you are viewing through the Slingbox. You do have the ability to change channels through both devices, but the channels will be the same on both. The only way to get around this would be to get a seperate cable box to dedicate to the Slingbox so that you are then able to view seperate channels on the seperate cable boxes.
Hope this helps,
The Sling Moderation Team